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Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode

From Sudeep Holla <sudeep.holla@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode
Date 2017-02-22 15:40 +0100
Message-ID <tdGfh-32X-41@gated-at.bofh.it> (permalink)
References (2 earlier) <tdgut-1L2-13@gated-at.bofh.it> <tdgEa-1QZ-7@gated-at.bofh.it> <tdlDP-55Q-1@gated-at.bofh.it> <tdmqd-5F2-9@gated-at.bofh.it> <tdFsR-2p2-15@gated-at.bofh.it>
Organization ARM

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On 22/02/17 13:47, Geert Uytterhoeven wrote:
> Hi Sudeep,
> 
> On Tue, Feb 21, 2017 at 6:22 PM, Sudeep Holla <sudeep.holla@arm.com> wrote:

[...]

>>
>> IIUC, it's not implemented today. I can't talk about future ;), but your
> 
> Good, so there's no need for the DT property, and drivers/firmware/psci.c
> should aways call do_cpu_idle() instead of PSCI SYSTEM_SUSPEND if any
> other wake-up sources are configured?
> 

No.

> That follows the principle of least surprise: it doesn't leave the user with
> a system that won't wake up the way he configured it to wake up.
> 

But he can still wake up with the "switch" so there's no surprise. He
just need to better understand his system before playing with it ;)

-- 
Regards,
Sudeep

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Thread

[PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
  [PATCH/RFC 2/6] PM / Wakeup: Add wakeup_source_available() Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
  [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
    Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 11:50 +0100
      Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:30 +0100
        Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 18:00 +0100
    Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Pavel Machek <pavel@ucw.cz> - 2017-02-21 12:10 +0100
      Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 12:20 +0100
        Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
          Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 18:30 +0100
            Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:50 +0100
              Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 15:40 +0100
          Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Mark Rutland <mark.rutland@arm.com> - 2017-02-21 18:30 +0100
            Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 19:10 +0100
              Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Mark Rutland <mark.rutland@arm.com> - 2017-02-21 19:20 +0100
                Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow  suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 19:30 +0100
  [PATCH/RFC 1/6] alarmtimer: Postpone wake-up source registration until really available Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
  [PATCH/RFC 6/6] arm64: dts: r8a7796: Fix non-PMIC wake-up sources Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
  [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
    Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 12:00 +0100
      Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
        Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 17:50 +0100
    Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Pavel Machek <pavel@ucw.cz> - 2017-02-21 12:10 +0100
      Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
      Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Mark Rutland <mark.rutland@arm.com> - 2017-02-21 19:00 +0100
    Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Mark Rutland <mark.rutland@arm.com> - 2017-02-21 18:50 +0100
      Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 15:10 +0100
        Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if  SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 16:00 +0100
  Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 11:40 +0100
    Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:30 +0100
      Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 17:50 +0100
        Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 18:40 +0100
          Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:00 +0100
            Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:40 +0100
              Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:50 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-02-22 02:30 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 12:10 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:40 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 15:40 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 16:00 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 17:00 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-23 16:30 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-23 16:40 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-23 17:00 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts  power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-23 17:00 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:20 +0100
                Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 15:40 +0100

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